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These are the user uploaded subtitles that are being translated: 1 00:00:00,480 --> 00:00:02,700 Hello and welcome to this new tutorial. 2 00:00:02,880 --> 00:00:08,970 So in the previous tutorial we started to define our detect function which takes as input the grade 3 00:00:09,030 --> 00:00:10,510 that is the black and white image. 4 00:00:10,620 --> 00:00:18,780 And that same original image which is frame and we started to get the faces to apples which are not 5 00:00:18,780 --> 00:00:24,120 only the coordinates of the upper left corner of the rectangle that will detect the face but also the 6 00:00:24,120 --> 00:00:26,910 width and the height of these rectangles. 7 00:00:26,910 --> 00:00:30,070 So we got this things to detect Montell method. 8 00:00:30,240 --> 00:00:35,100 And now we're going to start a full loop that will iterate through these faces and for each of these 9 00:00:35,100 --> 00:00:39,360 faces we're going to draw a rectangle and we will detect some eyes. 10 00:00:39,660 --> 00:00:47,820 So let's start this for loop four and we're going to iterate through the faces and as we said faces 11 00:00:47,910 --> 00:00:55,640 are tables of four elements x and y which are the coordinates of the upper left corner of the rectangle 12 00:00:55,650 --> 00:01:02,520 detecting the face w which will be the width of the rectangle and H which will be the height of this 13 00:01:02,520 --> 00:01:03,390 rectangle. 14 00:01:03,630 --> 00:01:14,100 So for X Y W and H N then obviously faces because spaces contains exactly the Stupples of x y w an edge. 15 00:01:14,280 --> 00:01:16,260 So that's it that's the beginning of the follow up. 16 00:01:16,350 --> 00:01:21,810 And now we are ready to enter inside the loop to say what we want to do at each step. 17 00:01:21,840 --> 00:01:23,870 That is for each faces. 18 00:01:23,910 --> 00:01:28,420 So the first thing we want to do very simply is to draw the rectangle. 19 00:01:28,860 --> 00:01:32,860 And actually this is very simple that's why we're using Open City. 20 00:01:32,910 --> 00:01:37,700 We have a function for this which is the rectangle function very simply. 21 00:01:37,920 --> 00:01:45,000 So what we need to do what we simply need to do is take C-v to our opens the module then do that and 22 00:01:45,000 --> 00:01:50,970 then this rectangle function and this rectangle function takes several arguments. 23 00:01:51,150 --> 00:01:57,820 The first one is frame of course you know we want to specify on which image we want to draw the rectangle. 24 00:01:57,820 --> 00:02:02,830 Our ISO frame is our first argument and then we need to input several more arguments. 25 00:02:02,830 --> 00:02:08,730 The second one is the coordinates of the upper left corner of the rectangle and that we have it because 26 00:02:08,970 --> 00:02:10,440 that's exactly X and Y. 27 00:02:10,620 --> 00:02:16,750 So that second argument is exactly the couple of these coordinates x and y. 28 00:02:17,100 --> 00:02:18,780 So that's the second argument. 29 00:02:18,780 --> 00:02:25,970 Then the third argument is going to be the couple of coordinates of the lower right corner of the rectangle. 30 00:02:26,130 --> 00:02:37,630 And that we can get it by taking x plus w and y s h because W is the with and h is the height. 31 00:02:37,880 --> 00:02:43,650 So that gives us exactly the coordinates of the lower right corner of the rectangle. 32 00:02:43,790 --> 00:02:46,780 Then we need to pick a color for the rectangle. 33 00:02:46,790 --> 00:02:49,840 So that's going to be exactly our next argument. 34 00:02:49,970 --> 00:03:00,590 And you know to specify a color we need to use RGV code 255 0 0 and then for the X we'll pick a different 35 00:03:00,590 --> 00:03:06,960 color we'll pick for example green to zero here to Phi Phi here and 0. 36 00:03:07,310 --> 00:03:11,030 But anyway that's the fourth argument for the color. 37 00:03:11,150 --> 00:03:17,330 And then we need to put one last argument which is not very important bresh is going to be the thickness 38 00:03:17,420 --> 00:03:19,590 of the edges of the rectangles. 39 00:03:19,610 --> 00:03:25,490 So we're going to pick two is just in order to have some nice rectangles and that's very important that 40 00:03:25,490 --> 00:03:28,130 just for the form but two is a good choice. 41 00:03:28,250 --> 00:03:31,900 You will get some nice rectangles for the faces. 42 00:03:31,910 --> 00:03:33,680 All right so congratulations. 43 00:03:33,680 --> 00:03:37,060 We actually detected the faces draw the rectangles. 44 00:03:37,250 --> 00:03:39,000 Now we're going to do the same for the eyes. 45 00:03:39,020 --> 00:03:43,380 But as we said in the previous tutorial or tutorials before. 46 00:03:43,520 --> 00:03:47,970 Well we're going to do that in the referential of the face to save some computation time. 47 00:03:48,170 --> 00:03:50,900 So we will take care of these eyes in the next toils. 48 00:03:50,990 --> 00:03:52,900 And until then and joy can be division. 5370